The Earth has been around for about 1/3 of the entire time the universe has existed.
Its extraordinary that at least on earth it took that long for life to develop that was intelligent enough to know this fact.
It literally took scales on the order of magnitude as the total time the universe has been existed to get where we are... sucks we are also on the verge of messing that all up.
@zleap To me when looking at things this way the fact that humans exist for only a fraction of the timeline is not particularly inciteful. That is true of every species on the timeline.
What is more impressive to me is that it took 4.5 billion years to produce the first life with our sort of intelligence. Plus it took only 1 billion years to for life to be created and then 3 billion more years just to go from single cell to multicellular.
The pace of evolution speeds up over time in a sense.